[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

AU572284B2 - Synthesis of urea - Google Patents

Synthesis of urea

Info

Publication number
AU572284B2
AU572284B2 AU41241/85A AU4124185A AU572284B2 AU 572284 B2 AU572284 B2 AU 572284B2 AU 41241/85 A AU41241/85 A AU 41241/85A AU 4124185 A AU4124185 A AU 4124185A AU 572284 B2 AU572284 B2 AU 572284B2
Authority
AU
Australia
Prior art keywords
urea
synthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU41241/85A
Other versions
AU4124185A (en
Inventor
Franco Granelli
Sergio Menicatti
Cesare Miola
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SnamProgetti SpA filed Critical SnamProgetti SpA
Publication of AU4124185A publication Critical patent/AU4124185A/en
Application granted granted Critical
Publication of AU572284B2 publication Critical patent/AU572284B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2425—Tubular reactors in parallel
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/0204—Apparatus characterised by their chemically-resistant properties comprising coatings on the surfaces in direct contact with the reactive components
    • B01J2219/0236—Metal based
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/025—Apparatus characterised by their chemically-resistant properties characterised by the construction materials of the reactor vessel proper
    • B01J2219/0277—Metal based
    • B01J2219/0286—Steel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
AU41241/85A 1984-04-20 1985-04-15 Synthesis of urea Ceased AU572284B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8420635A IT1209532B (en) 1984-04-20 1984-04-20 PROCESS FOR THE SYNTHESIS OF UREA AND MATERIAL USED IN ITSELF.
IT20635/84 1984-04-20

Publications (2)

Publication Number Publication Date
AU4124185A AU4124185A (en) 1985-10-24
AU572284B2 true AU572284B2 (en) 1988-05-05

Family

ID=11169848

Family Applications (1)

Application Number Title Priority Date Filing Date
AU41241/85A Ceased AU572284B2 (en) 1984-04-20 1985-04-15 Synthesis of urea

Country Status (22)

Country Link
US (1) US4899813A (en)
JP (1) JPS60233047A (en)
AR (1) AR240914A1 (en)
AU (1) AU572284B2 (en)
BE (1) BE902246A (en)
CA (1) CA1331993C (en)
DE (1) DE3514250A1 (en)
DK (1) DK175985D0 (en)
ES (1) ES8603288A1 (en)
FR (1) FR2563217A1 (en)
GB (1) GB2157687B (en)
GR (1) GR850954B (en)
IN (1) IN164410B (en)
IT (1) IT1209532B (en)
LU (1) LU85857A1 (en)
MX (1) MX160685A (en)
NL (1) NL8501151A (en)
NO (1) NO163559C (en)
PT (1) PT80322B (en)
SE (1) SE8501859L (en)
SU (1) SU1731045A3 (en)
ZA (1) ZA852725B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA26895C2 (en) * 1990-03-12 1999-12-29 Уріа Казале С.А. Invention relates to the chemical technology of obtaining ammonia and carbon dioxide, method of improvement of operation and decrease of the effects of corrosion, at high temperatures and pressures, during condensation of ammonia, carbon dioxide and water vapors, which are obtained from the systems of so-called “stripping” of the solution in the reactor of obtaining urea. The method of condensation of vapors of ammonia, carbon dioxide and water that are formed during treatment of the solution, which is supplied from the reactor of obtaining urea, includes cooling vapors of ammonia, carbon dioxide and water in the urethane condenser equipped with the tube bundles of U-shaped form, with subsequent recirculation of a part of obtained solution of urethane and recuperation of the heat of condensation with formation of water vapor.
DE9405062U1 (en) * 1994-03-24 1994-05-26 Hoval Interliz Ag, Vaduz-Neugut Heat exchanger tube for boilers
DE19534823C2 (en) * 1995-09-20 2002-08-22 Ruhr Oel Gmbh Shell and tube heat exchangers
AT403735B (en) * 1996-03-11 1998-05-25 Vaillant Gmbh FLAT HEAT EXCHANGER
US6318094B1 (en) * 2000-08-11 2001-11-20 Paul Mueller Company Bimetallic tube in a heat exchanger of an ice making machine
ITMI20021009A1 (en) * 2002-05-13 2003-11-13 Snam Progetti TUBE BAND EQUIPMENT FOR PROCESSING CORROSIVE FLUIDS
EP1577632A1 (en) * 2004-03-16 2005-09-21 Urea Casale S.A. Apparatus for treating highly corrosive agents
US7922065B2 (en) * 2004-08-02 2011-04-12 Ati Properties, Inc. Corrosion resistant fluid conducting parts, methods of making corrosion resistant fluid conducting parts and equipment and parts replacement methods utilizing corrosion resistant fluid conducting parts
ITMI20061223A1 (en) * 2006-06-26 2007-12-27 Snam Progetti BIMETALLIC PIPE RESISTANT TO CORROSION AND ITS USE IN TUBIWERO BAND EQUIPMENT
IT1391426B1 (en) 2008-07-17 2011-12-23 Snam Progetti TUBE BAND EQUIPMENT FOR PROCESSING CORROSIVE FLUIDS
EP2286909A1 (en) * 2009-08-17 2011-02-23 Stamicarbon B.V. An apparatus for the decomposition of non-converted ammonium carbamate in urea solutions in a urea synthesis process
US10118259B1 (en) 2012-12-11 2018-11-06 Ati Properties Llc Corrosion resistant bimetallic tube manufactured by a two-step process
EP2801396A1 (en) * 2013-05-10 2014-11-12 Casale Sa Use of duplex stainless steel in an ammonia-stripping of urea plants
RU2675952C2 (en) * 2014-01-10 2018-12-25 Эуротекника Меламине, Люксембург, Цвайгнидерлассунг ин Иттиген Tube heat exchange assembly and apparatus, in particular reactor for production of melamine comprising such heat exchange assembly
WO2017003711A1 (en) * 2015-06-30 2017-01-05 Uop Llc Heat exchangers for low temperature carbon dioxide separation from natural gas
EP3178535A1 (en) 2015-12-11 2017-06-14 Casale SA A urea process with high-temperature stripping
JP2019527296A (en) * 2016-07-01 2019-09-26 サンドビック インテレクチュアル プロパティー アクティエボラーグ Bimetal pipe and method for producing bimetal pipe
BR112020008222B1 (en) * 2017-10-27 2022-05-17 Stamicarbon B.V. High pressure carbamate condenser
ES2793387T3 (en) 2017-12-22 2020-11-13 Saipem Spa Uses of duplex stainless steels
EP3513871A1 (en) * 2018-01-17 2019-07-24 Yara International ASA Carbamate decomposer comprising flow distributor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1046271A (en) * 1963-02-01 1966-10-19 Allied Chem Urea manufacturing process

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041152A (en) * 1957-02-21 1962-06-26 Chemical Construction Corp Apparatus for high temperature and pressure chemical reactions
FR1356620A (en) * 1963-02-01 1964-03-27 Chemical Processes Of Ohio Process for the synthesis of urea from ammonia and carbon dioxide and installation for its implementation
US3515520A (en) * 1967-02-13 1970-06-02 Universal Oil Prod Co Reactor with internal protective sleeve for corrosive systems
AT290545B (en) * 1967-09-29 1971-06-11 Snam Progetti Process for the production of low carbamate urea
GB1292515A (en) * 1969-04-04 1972-10-11 Snam Progetti Process for producing urea
IL36465A (en) * 1970-04-02 1974-07-31 Zardi U Process for the production of urea
GB1327321A (en) * 1971-05-25 1973-08-22 Chemical Construction Corp Process for urea synthesis
DE2153437B2 (en) * 1971-10-27 1974-11-21 Metallgesellschaft Ag, 6000 Frankfurt Reactor for the production of methanol
US4210600A (en) * 1976-10-28 1980-07-01 Snamprogetti, S.P.A. Method for the preparation of urea with a high-yield reactor
US4291104A (en) * 1978-04-17 1981-09-22 Fansteel Inc. Brazed corrosion resistant lined equipment
IT1141030B (en) * 1980-08-29 1986-10-01 Snam Progetti PROCEDURE FOR THE PRODUCTION OF UREA

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1046271A (en) * 1963-02-01 1966-10-19 Allied Chem Urea manufacturing process

Also Published As

Publication number Publication date
GB2157687B (en) 1987-10-07
ZA852725B (en) 1985-11-27
SE8501859D0 (en) 1985-04-16
GB2157687A (en) 1985-10-30
DE3514250C2 (en) 1988-12-22
NO851574L (en) 1985-10-21
DE3514250A1 (en) 1985-11-07
IN164410B (en) 1989-03-11
AR240914A1 (en) 1991-03-27
AU4124185A (en) 1985-10-24
IT1209532B (en) 1989-08-30
IT8420635A0 (en) 1984-04-20
NO163559C (en) 1990-06-20
ES543108A0 (en) 1985-12-16
CA1331993C (en) 1994-09-13
US4899813A (en) 1990-02-13
FR2563217A1 (en) 1985-10-25
JPS60233047A (en) 1985-11-19
MX160685A (en) 1990-04-09
PT80322A (en) 1985-05-01
GB8510103D0 (en) 1985-05-30
DK175985D0 (en) 1985-04-18
LU85857A1 (en) 1985-12-16
NO163559B (en) 1990-03-12
NL8501151A (en) 1985-11-18
SU1731045A3 (en) 1992-04-30
ES8603288A1 (en) 1985-12-16
BE902246A (en) 1985-10-21
PT80322B (en) 1987-02-16
GR850954B (en) 1985-11-25
AR240914A2 (en) 1991-03-27
SE8501859L (en) 1985-10-21

Similar Documents

Publication Publication Date Title
AU568934B2 (en) New process for the synthesis of pyrido-imidazo-rifamycins
AU573314B2 (en) Synthesis gas
AU572284B2 (en) Synthesis of urea
AU572768B2 (en) Catalytic ammonia synthesis process
DE3479314D1 (en) Substituted 2-aminotetralins and processes for synthesis
AU558388B2 (en) Production of n-acylphenylalanines
AU570091B2 (en) Synthesis gas
AU568706B2 (en) Synthesis of silicophosphoaluminates
GB2165544B (en) Synthesis of 20-ketopregnanes via steroid 23-oxazolines
AU4886885A (en) Synthesis of quinones
AU583297B2 (en) Improved synthesis of ZSM-23 zeolite
AU582932B2 (en) Synthesis of nizatidine
AU567221B2 (en) N-benzoyl-n'-pyrimidinyloxyphenyl urea compounds
AU4842685A (en) Synthesis converter particularly of ammonia
GB2176189B (en) Derivatives of 11-desoxy-17a-oxicorticosterone
AU566580B2 (en) Preparation of 1-azidoaldoses
GB8717230D0 (en) Manufacture of ammonia &c products
GB8409282D0 (en) Synthesis of zeolitic materials
AU575985B2 (en) Synthesis of silicophosphoaluminate
AU591920B2 (en) Precursors and synthesis of methyl-9-oxo-11alpha, 16- dihydroxy-16-vinyl-5-cis-13-trans-prostadienoates
AU569721B2 (en) Band of connected nails
GB2110675B (en) Synthesis of urea
GB8508301D0 (en) Synthesis of brassinolide
GB8416903D0 (en) Synthesis of clavulone derivatives
AU3102884A (en) Synthesis of polyurethane products